Tractor implement attachment



. `Oct. 13, 1942. J, Mam-(05mv Filed May 25, 1940 YTRACTOR IMPLEMENT ATTACHMENT 4 Sheets-Sheet l Bf!! MQ.

zo@ 13, 1942 v J. MoRKosKl 2,298,499

TRACTOR IMVPLEMENT ATTACHMENT Filed May 25, 1940 4 SheetS-SheetZ Oct. 13, 1942. .1. MoRKosKl 2,298,499

TRACTOR IMLEMENT ATTACHMENT Filed May 25, 1940 4 sheets-sheet 3 'Jam mor/05H f Bj paw@ l0ct.13,1'942.v JMORKOSKL I Vv'2,298,499

TRACTOR IMPLEMENT ATTACHMENT Filed May 25, 1940 4 Sheets-Sheet 4 James morloslb By MMM i Patented Oct. 13, 1942 Y UNITED STATES PATENT QFFICEpp TRACTOR A'r'rAcrnvmNT l' t J ames Morkoski, Canton,

national Harvester Company,

New Jersey Ill., assignor to intera corporation of 12 Claims.

This invention relates to tractor implement attachrnents, and more particularlyl to a mechanism for lifting, stabilizing, and holding the part thereof carrying theground-working in' their effective ground-working positions. The invention relates further to an implement attachment with its mechanism for lifting, stabilizing, and holding the same in the ground and having parts whereby. this same attachment Lmay be converted into anl attachment to provide for further ground-working tools, and to means provided in the combined attachment whereby the effecting of lifting, stabilizing, and applying pressure can likewise be effected in the same.

It is, thereforeone object of this invention -to provide in an attachment means whereby added attachments may be made thereto and wherein similar effects can' be given to the combined or converted attachment. Y

It is another and more specific object of the invention to make the connection of the connecting means at such aA location near to the connection of theV auxiliary attachment to thev main attachment that stabilizing pressure will be distributed between the main and auxiliaryv frameattachments.

It is a further object of the invention `to make use of means already provided on the main attachment for the connection with the stabilizing and lifting means wherein the rel: tive movement between the Vauxiliary elements and the main elements will be limited upon the lifting of the combined attachment.

According to the present invention, the connecting means between the pivotally mounted main frame and the rigidly connected supporting structure on the tractor may be removedfor `connection to the auxiliary attachments which4 are pivotally connected to the main attachment to trail the same in tandem relation. On the auxiliary attachments, there is provided means for the connection of this connecting means from the supporting structure at locations near to the pivotal connection of the auxiliary attachments with the main frame. By having this connection made near to the pivotal connection,-pressure i will be distributed and made effective upon both the forward main frame and auxiliary tools. The means now provided on the main attachment and extending rearwardly fori-connection with the lifting means is'located above the auxiliary attachments and adapted to be engaged by the same upor lifting of the combined attachment, whereby the combined attachment will become rigid for lifting purposes. n

tools For other objects and for aV better understanding of the invention, reference may be had to the following description taken in connection with the accompanying drawings, in which;

Figure 1 is a view in side elevation of the rear portion of a tractor with the implement of the present invention attached thereto';NV

Figure 2 is a plan view ofthe rear portion of a tractor and of the `implement' attachment illustratingV the present invention;

Figure3 is a rear the tractor:`

Figure 4 is a perspective view of the combined l Referring now to the figures, there is shown" generally a portion l0 ofka tractor having a transverse dierential and rear axle housing Il with the depending stub axle housings l2 from which are connected the tractor drive wheels I3. This tractor is of the depending housing type and is used particularly in the fields where implements of the type to be presently.y de -v scribedgar to be used. The implementof the present type is one of those particularly adapted for cultivation of sugar cane.

Associated with the tractor and connected to the transverse rear axle housing Il is a power lift device I4 adapted to receive power fromthe gearing within the housing Il, and is of a type commonly in use withsuch tractors. The device has a/crank arm i5, to'which may be connected structure includes rearwardly and'upwardly inclined side members 20 connected at their lower a link I6. This link I6 maybe connected to an arm l1 rigidly xed to a rock-shaft IB to thereby effect rocking movement of the same. As the crank arm I5 makes a complete revolution, the` rock-shaft will be rocked from one position to another, and then returned. Y 1

Connected to the rear of the tractor and adapted to overhang the same is a supportingstrucl ture, indicated generally at I9. This supporting elevational view lookingy at the rear ofthe implement and at the rear of by the same means as are connected the bracing members 2|, as indicated at 22 (see Figure 2). There may also be provided a bracing means connected with the transverse member 24 and taking the form of a V-shaped member 25 connected to the side members at 26.

On this supporting structure I9 is pivoted a pivotal structure indicated generally at 21 and is adjustably connected the ends of pressure spring means 41, as indicated at 46. The forward ends of this spring means 41 is connected to the arm 42, as indicated at 49. These springs tend to maintain the arms 4| in rigid relation and against the transverse portion 32 of the pivoted structure 21, for reasons which will be more appivoted at 28 to the upper ends of the supporting side members 20 of the supporting structure I9. This pivotal connection is made by means oi' a shaft extending through and between the respective side members 20, and adapted to be removed therefrom by removing the cotter pins 29. Y This pivotal structure 21 is fashioned V like a frame and has longitudinally extending portions 3| and transversely extending portions 32 and 32'. To the longitudinally extending portions 3| are connected downwardly extending plate members :33, having openings therethrough for the attachment of the pivoted structure to the shaft indicated at 28. By these openings, through which-the shaft may pass, Vthe pivoted frame structure 21 is journaled for pivotal movement on the supporting structure I9.

The pivotal structure 21 may be connected by means of operatinglinks 34 -with arms 35 rigid with the rock-shaft I8, whereby the Apivoted structure may be rocked about the pivot 28 by means of the power lift device |4.` To assist the power `lift device during the lifting operation, there has been provided two sets of springs indicated at 36 and located at each side of the sup-r porting structure, respectively. These spring de-- vices 36 are connected directly to the pivoted structure 21, as indicated at 31, and their rearward ends are anchored to the side frame members 20 of the 'supporting structure, as indicated at 38. These spring devices are not sufficient to effect actual lifting, but do materially assistV in the lifting operation by the power liftdevice I4.

Connected to the pivoted structure 21 is a stabilizer `Vand pressure spring device indicated generally at 39. Referring particularly to Figures l and 4, it will be noted that thisdevice comprises a shaft 40 which is pivoted to the side frame structuresk 3| of the pivoted frame structure 21, and to this shaft thereV are rigidly connected spaced lifting arms 4| `and an arm member 42 located midway between theiends of the shaft 46 and extending substantially at right angles with respect to the arm members 4|..

When the lifting operation is eiected, the lifting armmembers 4| Ywill contact with the transverse portion 32 of the pivoted structure 21, whereby lifting may be effected, the shaft 40 being piv- Y otaliy connected as at 43 with the longitudinally extending side frame portions 3| of the pivoted structure 21.

Since the respective arm members 4| are rigid with the shaft 40, it will be apparent that stabilization maybe aiorded" through the shaft 40 upon the rearward ends of the arms 4| being connected with-an implement at laterally spaced locations on the same. This will be more as the description proceeds.l

To this shaft 4I) there is journaled at vtheir forward ends the legs of a U-shaped member 45. This U-shaped member extends rearwardly and is xed with respect to the transverse portion 32 of the pivoted frame structure 21 by means `of angle brackets 46. The U-shaped member 45 extends rearwardly to a substantial distance beyond this transverse portion 32, at which-location there apparent parent and hereinafter described.

Forming another partof the attachment is a main tool-carrying frame 5| pivoted to the depending housing |2 by means indicated at 52 and comprising generally two longitudinally extending members 53, to the rearward ends of which are connected a pair of transversely extending members 54. These transversely extending members have brackets 55 for the pivotal connection thereto of a gang of disks 56. As means for effecting angling of these gangs 56 there is provided a manual adjustment means 51. These gangs 56 are spaced'with respect to each other to provide an opening between the same fcr'the passage of the row crop. The gangs work on both sides of the row crop to cultivate the soil. Such an implement attachment 5| has been used heretofore, `and means have been provided including longitudinally extending members 58 adapted to overhang the rear-portions of the main attachment frame for the connection of the same to the lifting means by meansv of the links 59. 'When the'main attachment frames have been used alone,'the Asaine are lifted by the operation of the lifting means through the connecting links 59 which would be attached to the longitudinally extending members 56 by means of a shaft 60 located in the rear ends of the longitudinally extending members'58.v i

According to the present invention,A use is' made of these longitudinally extending members 56 which are rigidly connected to the side frame members 53, respectively, as indicated at 6|, and to one of the transverse frame members 54, as by meansA of a strap 62, The connecting links may be disconnected from the shaft 60 ofthe lonwith the auxiliary frames isshown at 65 and more clearly in Figure 5, and includes a shaft 66 extending between side frame and inner frame,

members 61 and 61 of the auxiliary attachment frame 63. To the rearward ends of these frame members 61 and 61' of the auxiliary frame 63, there is connected `a transversely extending I member` 66 having connected thereto a pair of spaced brackets 6 9, tolwhich may be pivotallyV connected auxiliary diskgangs 10. These disk .gangs may be angled .by means of an adjustable drag-rod 1| connected forwardly to the shaft 66. It will be noted that thedisk gangs 10 of the auxiliary attachment oppose the respective disks oi?f thedisk gangs 56 of the main frame attachment 53.

Itshould be noted that the connecting links 59 from the supporting structure are connected to the auxiliary frame at locations which are near to -their pivotal connections 64` with the main frame attachment 53. By having these connections made at this location, the pressure derived from the pressure springs 41 of the stabilizing and pressure structure .39 will be distributed so that it will be applied to both the disks on both the main frame and lauxiliary attachments. Further, it should be noted that, since the connecting links 69 are connected'in spaced relation,

the transverse frame structures will be stabilized It should now be further noted that, since' the Y shaft-48 has rigidly connected thereto the arm will tend also to'maintain the armsll kagainst the transverse portion'32 of the pivoted frame Astructure and at the's'ame time to thereby apply pressure to the attachments. VAny tendency for V42, the spring means 41 acting @upon-the arm 42 g the combined implement attachments tohraise Y out of the ground will Abe resisted by this spring device 41. A Y -V By having the longitudinally extending members 58 adapted torextend rearwardly, they are in a location such that the rod 60 interconnecting the ends'of the same will be engaged by the inner frame members' 61' upon operation of the pivoted structure 2l bythe power'lift device- I4 to effect lifting of the combined implement attachment. Thus it Will be apparent that the longitudinally extending members 58, normally utilized for the connection with the mainframe attachment of the connecting links 59,A may be utilized for limiting the pivotal movement between the auxiliary attachment frame and-the main attachment frame, whereby lifting of these frames jointly may be elected. The auxiliary attachment frame will Vbe pivoted for a short interval until its members 61 engage with the shaft 6U on the ends of the longitudinally extending arms 58, and then the main frame attachment will'be lifted with the same.

It should now be apparent that there has been provided an arrangement for connecting an-'auxiliary attachment to a main frame attachment vso that a combined tandem arranged cultivator will be effected. The main frame cultivator attachment will thereby be converted into a double frame, tandem cultivator attachment and the 2. In combination, a'wheeled frame, a pairv of f'ground-workin'g tool-carrying frames pivotally connected together for relative movement with respect to each other in their ground-working position,` and'to the.wheeled frame to be drawn thereby, pressure means adapted Vto react against the wheeledlframef and means forconnecting the pressure means to the tool-carrying frames in such relationto the pivotaljconnectionY therebetween that the pressure from'the pressure means will be distributed' between-the frames.

3. In combination, a wheeled frame, amaln tool-carrying frame pivoted to'the wheeled frame for vertical movement 'with respect thereto, an

'auxiliary frame pivotally connected to the main frame for vertical movement with respect to the same, pressure'meansfadapted to react against the wheeled frame, and means for connecting the'pressure` means to one of said frames near to the. pivotal connection between the same, whereby the pressure from thepressure' means will be distributed between the two frames;v

`4. In combinatiomatractor having-areal' axle structure, an implement attachment comprising a supporting structure rigidly connected to 'the tractor ,andextending rearwardly therefrom and a tool-carrying structure including a. main frame lpivotally 'connected to the Vtractor for-vertical meansV on the main attachment frame ordinarily 'fined in the appended claims.

What is claimed is:

l. In combination, a tractor having a transverse rear axle structure, an implement attachment connected to the tractor and comprising a supporting structure extending rearwardly from the rear axle structure and having lifting means associated therewith, a. main toolframe pivoted to the tractor for vertical movement and adapted to extend rearwardly beneath the supporting structure, an auxiliary frame pivoted to the main frame for .independent vertical movement, means for connecting the auxiliary frame to the liftingmeans associated with the supporting structure, and means automatically coming into play to prevent relative vmovement between said frames upon operation of theV lifting movement and extending rearwardly beneath the frame pivotally connected to the mainframe for vertical movement with respect thereto, pressure meanstadapted to react against the supporting Vsupportingstructure, an auxiliary tool-carrying structure,`and'means for connecting'the pressure means to one of said frames near to the pivotal Y 'connection between thesame, whereby the presbe distributed between" the Y 'two frames.

sure therefrom will 5. In combination, a tractor Yhaving a rear axle structure, an implement attachmentvrcomprising a supporting structure rigidly connected tothe tractor and extending V'rearwardly therefrom 'and a tool-carrying structure including a main frame being distributed between all of the frames.

means whereby both of said frames will be lifted Y together about the pivot connection of the main frame with the tractor.

6. In combination, a tractor, a main tool-carrying frame pivoted to the tractor ,for vertical movement with respectthereto, an auxiliary toolcarrying frame pivoted to the main tool-carrying frame forv vertical movement with respect thereto, and stabilizer means associated with-the tractor to react thereagainst and connected to the vmovably Y connected to `the tractor Yforn vertical auxiliary frame near to its pivotal connection.'

with the main frame whereby both the main and auxiliary frames will be stabilized against lateral transverse tilting with respect to the tractor.

7. In combination, a tractor, a main toolcarrying frame pivoted to the traotor'for vertical movement with respect thereto, an auxiliary tool-carrying frame pivoted to the main toolcarrying frame for vertical movement with respect thereto, pressure means for bothof said 'frames associated with the tractor to react against the same, means for connecting the pressure means to the auxiliary frame near to its` pivotal connections with the mainffrazne whereby the pressure will be distributed befween both of venting relative pivotal movement between the the frames, and said pressure means and means for connecting the same to the framesbeing so constructed and connected as to serve to stabilize the frames against lateral transverse tilting with respect tothe tractor. l g

k8. In combination, a tractor; having lifting means thereon, a toolcarrying frame pivoted to the tractor for vertical movement Vwith respect thereto, pressure means associated with the lift- Y means thereon, a main tool-carrying frame" .Y

pivotally connected to the tractor for vertical movementv with respect thereto, an auxiliary frame pivotally connectedgto said main frame for relativemovement with respect thereto,V combined pressure and stabilizing means carried by the lifting means, means for connecting the 'combined pressure and stabilizing means carried by the lifting means, means for connecting the rauxiliary frame to the pressure and stabilizer means and at locations near to their pivotal connections with the main frame, whereby all of said frames will have pressure -distributed between -them'and will be stabilized against lateral tilting with respect to the tractor, and means for preframes upon operation of the lifting meansA t0 thereby elect lifting through said connecting means, whereby said connecting means serves for llifting as well as for applying pressure and stabilizing forcelto said frames.

11. In combination, a tractor having a lifting means, a main cultivating attachment connected to the tractor for vertical movement with respect thereto including means serving normally for the connection of the-lifting means thereto, an auxiliary cultivating attachment adapted to be attached to the main cultivating attachment for vertical movement with respect thereto an'd hav- ,ing means for the attachment thereto of said litting means upon the auxiliary attachment being connected to the main attachment to convert the main attachment into an attachment which will give combined effect, saidconnecting means for the mai.; frame serving in the combined attachment as means for preventing relative movement between the auxiliary vand main attachments upon operation of the lifting means to lift the combined attachment.

'12. In combination, Va tractor having lifting means associated therewith, a main tool-carrying frame Aattachment pivotallyconnected to the tractor for vertical movement with respect thereto, and having means extending beyond the length of the same for connection with the lifting means, an auxiliary tool-carrying frame adapted to be pivotally connectedto the main frame for vertical movement with Vrespect thereto and to extend beneath the lifting connection for the main frame, whereby said main frame attachment will be converted linto an attachment which will be given a combinedefi'ect, said auxiliary frame havingY means l, for the connection ofthe lifting means and said connectionmeans `for the main frame adapted to be engagedby the auxiliary frame upon .operation of the lifting means to thereby limit the relative movement of the frame whereby liftinggof the combined frames may be effected. f f

, f JAMES MORKOSKI. 

